Electrical load processing device for converting electrical load into digital signal, has controllable switch establishing electrical path between terminals of capacitive element, where path discharges element during idle interval

摘要

The device (3) has a load amplifying circuit (30) for generating electrical voltage (Vs) at terminals of an capacitive element (32), where the electrical voltage represents an electrical load (Q) generated by a piezoelectric sensor (1). A controllable switch (33) establishes an electrical path between the terminals of a capacitive element when the controllable switch is in a closed position, where the electrical path discharges the capacitive element during an idle interval. Independent claims are also included for the following: (1) a method for controlling a device that is used to process an electrical load generated by a piezoelectric sensor of a vehicle (2) a system for processing an electrical load generated by a piezoelectric sensor of a vehicle comprising a control module.